PowertrainP20F3

Caution

Severity: Caution - get it checked when you can

SCR NOx pre- catalyst efficiency below threshold bank 2

21 brands affected · Description from Toyota data.

Key terms: Catalytic converter: cleans the exhaust gases · Control module: a small computer that runs one part of the car · Bank 2: the side of the engine containing cylinder 2 · Powertrain: engine, transmission and emissions

1What it means in plain English

The engine or powertrain control system has stored a fault that does not have specific guidance in this database yet.

2Common causes

Sensor or actuator fault
Wiring or connector fault
Vacuum or intake leak
Fuel or ignition problem
Control module fault

3Can I drive?

Caution · drive with care

Have it diagnosed promptly. If the car runs and drives normally, drive gently to a workshop. If it runs badly, stalls, overheats, loses oil pressure, or a warning light is flashing or red, stop safely and get professional help. If the code concerns the brakes, brake vacuum or brake assist, do not drive until it is checked: a hard pedal or longer stopping distance means stop.

This page gives general information. It is not professional advice. For a definite diagnosis and a repair quote, ask a qualified mechanic to inspect the car.

4Brand data 21

Brand	Code	Description	System
Ashok Leyland CV	P20F3	Temperature Sensor Of Exhaust Gases. (Bank 2. Sensor 4.) Values Out Of Range Brand	Powertrain
BAIC Motor	P20F3	SCR NOx Pre- Catalyst Efficiency Below Threshold Bank 2 Brand	Powertrain
Mercedes-Benz	P20F3	No description available	Powertrain
BYD	P20F3	SCR NOx Pre- Catalyst Efficiency Below Threshold Bank 2 Brand	Powertrain
Chery	P20F3	SCR NOx Pre- Catalyst Efficiency Below Threshold Bank 2 Brand	Powertrain
DFFS	P20F3	SCR NOx Pre- Catalyst Efficiency Below Threshold Bank 2 Brand	Powertrain
DFFX	P20F3	SCR NOx Pre- Catalyst Efficiency Below Threshold Bank 2 Brand	Powertrain
DFXK	P20F3	SCR NOx Pre- Catalyst Efficiency Below Threshold Bank 2 Brand	Powertrain
EOBD	P20F3	SCR NOx前触媒効率しきい値未満 Brand	Powertrain
Geely	P20F3	SCR NOx Pre- Catalyst Efficiency Below Threshold Bank 2 Brand	Powertrain
GM	P20F3	SCR NOx Pre- Catalyst Efficiency Below Threshold Bank 2 Brand	Powertrain
Great Wall	P20F3	SCR NOx Pre- Catalyst Efficiency Below Threshold Bank 2 Brand	Powertrain
Hafei	P20F3	SCR NOx Pre- Catalyst Efficiency Below Threshold Bank 2 Brand	Powertrain
Hyundai	P20F3	No description available	Powertrain
Isuzu	P20F3	No description available	Powertrain
Land Rover	P20F3	SCR NOx Pre-Catalyst Efficiency Below Threshold Brand	Powertrain
Peugeot	P20F3	No description available	Powertrain
Saab	P20F3	SCR NOx Pre- Catalyst Efficiency Below Threshold Bank 2 Brand	Powertrain
MG (SAIC)	P20F3	SCR NOx Pre- Catalyst Efficiency Below Threshold Bank 2 Brand	Powertrain
Smart	P20F3	No description available	Powertrain
Toyota	P20F3	SCR NOx pre- catalyst efficiency below threshold bank 2 Brand	Powertrain

Legend: SAE is the generic J2012 description; Brand is text taken from that manufacturer’s data. Manufacturer rows keep the wording and language of the source data, and non-English text is tagged so screen readers pronounce it correctly.

5Related codes

Browse Pxxx codes or P20Fxx codes.